Question

`Explain why 5×7×11+11 and 5×6×7×8+8 are composite numbers`​

Answer 1

What are the two parts equal to?5×7×11×13 is equal to five times something

(5×1001, but you don’t need to know that)55 is equal to five times something

(5×11, but you don’t need to know that)5×7×11×13+55 = (5 × something) + (5 × something)

Now, let’s apply the Distributive Property:

(5 × something) + (5 × something) = 5 × (something + something)five is a factor of our original expression